{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:RJCCGMOQMWZZZ4D74AWL3P5U3D","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"ee42a67981f8543f2f72b636cf21ab005ff2af825e72e38dbf3259fc09ee7f4b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-04-21T14:42:33Z","title_canon_sha256":"1d4e89b3483b017bb287728f2f00c995db058731d27a3aeb693b19e7b82263d4"},"schema_version":"1.0","source":{"id":"1604.06327","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.06327","created_at":"2026-05-18T00:45:36Z"},{"alias_kind":"arxiv_version","alias_value":"1604.06327v1","created_at":"2026-05-18T00:45:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.06327","created_at":"2026-05-18T00:45:36Z"},{"alias_kind":"pith_short_12","alias_value":"RJCCGMOQMWZZ","created_at":"2026-05-18T12:30:41Z"},{"alias_kind":"pith_short_16","alias_value":"RJCCGMOQMWZZZ4D7","created_at":"2026-05-18T12:30:41Z"},{"alias_kind":"pith_short_8","alias_value":"RJCCGMOQ","created_at":"2026-05-18T12:30:41Z"}],"graph_snapshots":[{"event_id":"sha256:46abd30d4d80e54fbddbc5d3e0c001958b2520f4c6e25b1bd4ff1eb449de2db9","target":"graph","created_at":"2026-05-18T00:45:36Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"In the first paper of this series, we proposed a novel method to probe large-scale intergalactic magnetic fields during the cosmic Dark Ages, using 21-cm tomography. This method relies on the effect of spin alignment of hydrogen atoms in a cosmological setting, and on the effect of magnetic precession of the atoms on the statistics of the 21-cm brightness-temperature fluctuations. In this paper, we forecast the sensitivity of future tomographic surveys to detecting magnetic fields using this method. For this purpose, we develop a minimum-variance estimator formalism to capture the characterist","authors_text":"Abhilash Mishra, Antonija Oklopcic, Christopher Hirata, Tejaswi Venumadhav, Vera Gluscevic, Xiao Fang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-04-21T14:42:33Z","title":"A new probe of magnetic fields in the pre-reionization epoch: II. Detectability"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.06327","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:3cb20eb932cc9f3bf833d2792b03e76b0848b1f39662d71c723498bd2e4e9128","target":"record","created_at":"2026-05-18T00:45:36Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"ee42a67981f8543f2f72b636cf21ab005ff2af825e72e38dbf3259fc09ee7f4b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-04-21T14:42:33Z","title_canon_sha256":"1d4e89b3483b017bb287728f2f00c995db058731d27a3aeb693b19e7b82263d4"},"schema_version":"1.0","source":{"id":"1604.06327","kind":"arxiv","version":1}},"canonical_sha256":"8a442331d065b39cf07fe02cbdbfb4d8ec1a5572fbc1fc179120bcca9e9bee55","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8a442331d065b39cf07fe02cbdbfb4d8ec1a5572fbc1fc179120bcca9e9bee55","first_computed_at":"2026-05-18T00:45:36.463146Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:45:36.463146Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"83iNBdL8UzJ5lHJptyQY1MdYihRvMLjec5K4ezWMc9IlEu7wZ6p6/4etoA0FFVdPnwtCiusgPRG7oeInXv8eCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:45:36.463666Z","signed_message":"canonical_sha256_bytes"},"source_id":"1604.06327","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3cb20eb932cc9f3bf833d2792b03e76b0848b1f39662d71c723498bd2e4e9128","sha256:46abd30d4d80e54fbddbc5d3e0c001958b2520f4c6e25b1bd4ff1eb449de2db9"],"state_sha256":"6ba1d0ead0db8cd1dc75406cdcb1309f3eb1ce5d2f539bab728eb652e810e557"}